01 -
Toss the steak into the freezer for a bit—it'll make slicing easier. Cut thin pieces, going opposite the meat's grain.
02 -
Warm up one tablespoon of oil in a big pan over medium heat. Sauté the peppers and onions with salt and pepper. Stir until soft and a little golden, then scoop them out and set aside.
03 -
Turn the heat up high. Pour the rest of the oil into the pan and toss in the steak slices. Sprinkle over some salt and pepper, cook super quick to brown, and break into portions.
04 -
Grab the bottom halves of the buns. Pile on the steak, followed by the peppers and onions. Lay two cheese slices on top of each.
05 -
Pop them under the broiler until the cheese goes gooey and starts bubbling. Place the top buns on, and enjoy right away!